In the fifteenth year of the Hongwu Emperor's reign, Empress Ma passed away, leaving behind a grief-stricken Zhu Yuanzhang. In the deep autumn of Nanjing, the entire city mourned. Zhu Di, who traveled south to offer condolences, was heartbroken. That same year, Zhu Di met the greatest benefactor of his life, Yao Guangxiao, and a young disciple standing beside him. "Your Highness, this is my junior disciple, his dharma name is Daoming."